SlideShare a Scribd company logo
A great example of checking
foundations / ground before
setting up for a lift.
• Incident: Friday Morning 26/09/08 –
Castle Hill / Sydney
• Equipment: 9 Day Old 250t Leibherr
Crane
(never used before)
• Values: $4 mill price tag
What went wrong….
• Insufficient risk analysis and planning.
• Failure of back propping beneath the 200mm thick
concrete deck.
• Crane support outrigger punched through slab causing
crane to lose balance and collapse across the site and
onto adjoining property.
• The Crane balanced in the air for approx 1 hour before
entire rig & boom collapsed completely across site and
rig falls through to the basement level.
Amazingly no-one was seriously injured or killed.
What went wrong….
• Insufficient risk analysis and planning.
• Failure of back propping beneath the 200mm thick
concrete deck.
• Crane support outrigger punched through slab causing
crane to lose balance and collapse across the site and
onto adjoining property.
• The Crane balanced in the air for approx 1 hour before
entire rig & boom collapsed completely across site and
rig falls through to the basement level.
Amazingly no-one was seriously injured or killed.

More Related Content

Viewers also liked

Cad cam trong-thiet_ke_va_che_tao
Cad cam trong-thiet_ke_va_che_taoCad cam trong-thiet_ke_va_che_tao
Cad cam trong-thiet_ke_va_che_taoHien Dinh
 
Kichen
KichenKichen
Kichen
aleks88
 
לאן בדיוק הלכו כולם
לאן בדיוק הלכו כולםלאן בדיוק הלכו כולם
לאן בדיוק הלכו כולםbarakrotem
 
Trabajo r
Trabajo rTrabajo r
Trabajo rduke159
 
Hoi nghi tom tat co khi
Hoi nghi tom tat co khiHoi nghi tom tat co khi
Hoi nghi tom tat co khiHien Dinh
 
Accidents annedrummond
Accidents annedrummondAccidents annedrummond
Accidents annedrummondHien Dinh
 
Why Companies Need a Bookings Policy, and How to Create One
Why Companies Need a Bookings Policy, and How to Create OneWhy Companies Need a Bookings Policy, and How to Create One
Why Companies Need a Bookings Policy, and How to Create One
Gotransverse
 
Revenue Recognition Policy Best Practices for Increasingly Complex Business M...
Revenue Recognition Policy Best Practices for Increasingly Complex Business M...Revenue Recognition Policy Best Practices for Increasingly Complex Business M...
Revenue Recognition Policy Best Practices for Increasingly Complex Business M...
Gotransverse
 
Navigating the Build vs. Buy Decision for Your Finance Technology Needs
Navigating the Build vs. Buy Decision for Your Finance Technology NeedsNavigating the Build vs. Buy Decision for Your Finance Technology Needs
Navigating the Build vs. Buy Decision for Your Finance Technology Needs
Gotransverse
 
How to Build a Great Cloud/SaaS Business Case Analysis for Technology Investment
How to Build a Great Cloud/SaaS Business Case Analysis for Technology InvestmentHow to Build a Great Cloud/SaaS Business Case Analysis for Technology Investment
How to Build a Great Cloud/SaaS Business Case Analysis for Technology Investment
Gotransverse
 
Internet of Things: How Finance Should Embrace the Coming Flood to Drive Top-...
Internet of Things: How Finance Should Embrace the Coming Flood to Drive Top-...Internet of Things: How Finance Should Embrace the Coming Flood to Drive Top-...
Internet of Things: How Finance Should Embrace the Coming Flood to Drive Top-...
Gotransverse
 

Viewers also liked (11)

Cad cam trong-thiet_ke_va_che_tao
Cad cam trong-thiet_ke_va_che_taoCad cam trong-thiet_ke_va_che_tao
Cad cam trong-thiet_ke_va_che_tao
 
Kichen
KichenKichen
Kichen
 
לאן בדיוק הלכו כולם
לאן בדיוק הלכו כולםלאן בדיוק הלכו כולם
לאן בדיוק הלכו כולם
 
Trabajo r
Trabajo rTrabajo r
Trabajo r
 
Hoi nghi tom tat co khi
Hoi nghi tom tat co khiHoi nghi tom tat co khi
Hoi nghi tom tat co khi
 
Accidents annedrummond
Accidents annedrummondAccidents annedrummond
Accidents annedrummond
 
Why Companies Need a Bookings Policy, and How to Create One
Why Companies Need a Bookings Policy, and How to Create OneWhy Companies Need a Bookings Policy, and How to Create One
Why Companies Need a Bookings Policy, and How to Create One
 
Revenue Recognition Policy Best Practices for Increasingly Complex Business M...
Revenue Recognition Policy Best Practices for Increasingly Complex Business M...Revenue Recognition Policy Best Practices for Increasingly Complex Business M...
Revenue Recognition Policy Best Practices for Increasingly Complex Business M...
 
Navigating the Build vs. Buy Decision for Your Finance Technology Needs
Navigating the Build vs. Buy Decision for Your Finance Technology NeedsNavigating the Build vs. Buy Decision for Your Finance Technology Needs
Navigating the Build vs. Buy Decision for Your Finance Technology Needs
 
How to Build a Great Cloud/SaaS Business Case Analysis for Technology Investment
How to Build a Great Cloud/SaaS Business Case Analysis for Technology InvestmentHow to Build a Great Cloud/SaaS Business Case Analysis for Technology Investment
How to Build a Great Cloud/SaaS Business Case Analysis for Technology Investment
 
Internet of Things: How Finance Should Embrace the Coming Flood to Drive Top-...
Internet of Things: How Finance Should Embrace the Coming Flood to Drive Top-...Internet of Things: How Finance Should Embrace the Coming Flood to Drive Top-...
Internet of Things: How Finance Should Embrace the Coming Flood to Drive Top-...
 

Similar to A great example_of_checking_foundations

SEAoAR 2015 Conference
SEAoAR 2015 ConferenceSEAoAR 2015 Conference
SEAoAR 2015 ConferenceJames Parrish
 
Water customer presentation
Water customer presentationWater customer presentation
Water customer presentationSuj Kang
 
Burj al Arab Constuction
Burj al Arab ConstuctionBurj al Arab Constuction
BURJ AL ARAB
BURJ AL ARABBURJ AL ARAB
BURJ AL ARAB
Sushil Kumar Gupta.
 
1926 concrete safety 2018
1926 concrete safety 20181926 concrete safety 2018
1926 concrete safety 2018
John Newquist
 
Duncan Webb - Lane Neave - Know the Land You Have
Duncan Webb - Lane Neave - Know the Land You HaveDuncan Webb - Lane Neave - Know the Land You Have
Duncan Webb - Lane Neave - Know the Land You Have
EQCfix New Zealand
 
Design, Structure, Construction and Analysis of Burj Al Arab, Dubai
Design, Structure, Construction and Analysis of Burj Al Arab, DubaiDesign, Structure, Construction and Analysis of Burj Al Arab, Dubai
Design, Structure, Construction and Analysis of Burj Al Arab, DubaiAr. Md Shahroz Alam
 
2015 CRW - Jack & Roll Techniques
2015 CRW - Jack & Roll Techniques2015 CRW - Jack & Roll Techniques
2015 CRW - Jack & Roll Techniques
Specialized Carriers & Rigging Association
 
underwater construction
underwater constructionunderwater construction
underwater construction
Yasir Hashmi
 
1926 concrete safety 2017
1926 concrete safety 20171926 concrete safety 2017
1926 concrete safety 2017
John Newquist
 
OSHA use 5a1 citations in construction fy08
OSHA use 5a1 citations in construction fy08OSHA use 5a1 citations in construction fy08
OSHA use 5a1 citations in construction fy08
John Newquist
 

Similar to A great example_of_checking_foundations (11)

SEAoAR 2015 Conference
SEAoAR 2015 ConferenceSEAoAR 2015 Conference
SEAoAR 2015 Conference
 
Water customer presentation
Water customer presentationWater customer presentation
Water customer presentation
 
Burj al Arab Constuction
Burj al Arab ConstuctionBurj al Arab Constuction
Burj al Arab Constuction
 
BURJ AL ARAB
BURJ AL ARABBURJ AL ARAB
BURJ AL ARAB
 
1926 concrete safety 2018
1926 concrete safety 20181926 concrete safety 2018
1926 concrete safety 2018
 
Duncan Webb - Lane Neave - Know the Land You Have
Duncan Webb - Lane Neave - Know the Land You HaveDuncan Webb - Lane Neave - Know the Land You Have
Duncan Webb - Lane Neave - Know the Land You Have
 
Design, Structure, Construction and Analysis of Burj Al Arab, Dubai
Design, Structure, Construction and Analysis of Burj Al Arab, DubaiDesign, Structure, Construction and Analysis of Burj Al Arab, Dubai
Design, Structure, Construction and Analysis of Burj Al Arab, Dubai
 
2015 CRW - Jack & Roll Techniques
2015 CRW - Jack & Roll Techniques2015 CRW - Jack & Roll Techniques
2015 CRW - Jack & Roll Techniques
 
underwater construction
underwater constructionunderwater construction
underwater construction
 
1926 concrete safety 2017
1926 concrete safety 20171926 concrete safety 2017
1926 concrete safety 2017
 
OSHA use 5a1 citations in construction fy08
OSHA use 5a1 citations in construction fy08OSHA use 5a1 citations in construction fy08
OSHA use 5a1 citations in construction fy08
 

More from Hien Dinh

Thiet bi co khi xuong can
Thiet bi co khi xuong canThiet bi co khi xuong can
Thiet bi co khi xuong can
Hien Dinh
 
Ly hop va hop so thuong
Ly hop va hop so thuongLy hop va hop so thuong
Ly hop va hop so thuong
Hien Dinh
 
Bai giang ma_sat
Bai giang ma_satBai giang ma_sat
Bai giang ma_sat
Hien Dinh
 
1 han va cat_trong_dong_tau
1 han va cat_trong_dong_tau1 han va cat_trong_dong_tau
1 han va cat_trong_dong_tau
Hien Dinh
 
Gt co so ky thuat cnc
Gt co so ky thuat cncGt co so ky thuat cnc
Gt co so ky thuat cncHien Dinh
 
1 cong nghe-han-tig(1)
1 cong nghe-han-tig(1)1 cong nghe-han-tig(1)
1 cong nghe-han-tig(1)Hien Dinh
 
1 cẩm nang gia công kim loại việt nam 2008
1 cẩm nang gia công kim loại việt nam 20081 cẩm nang gia công kim loại việt nam 2008
1 cẩm nang gia công kim loại việt nam 2008Hien Dinh
 
Fanuc ot g code training manual
Fanuc ot g code training manualFanuc ot g code training manual
Fanuc ot g code training manualHien Dinh
 
Bai tap lap trinh cnc
Bai tap lap trinh cncBai tap lap trinh cnc
Bai tap lap trinh cncHien Dinh
 
Sheet solutions 2009
Sheet solutions 2009Sheet solutions 2009
Sheet solutions 2009Hien Dinh
 
Sheet metal design
Sheet metal designSheet metal design
Sheet metal designHien Dinh
 
Lythuyetbiendangdeo
LythuyetbiendangdeoLythuyetbiendangdeo
LythuyetbiendangdeoHien Dinh
 
Accident investigation 3
Accident investigation 3Accident investigation 3
Accident investigation 3Hien Dinh
 
Accident injury prevention
Accident injury preventionAccident injury prevention
Accident injury preventionHien Dinh
 
Accident reporting and investigation
Accident reporting and investigationAccident reporting and investigation
Accident reporting and investigationHien Dinh
 
Acc injury-prev2
Acc injury-prev2Acc injury-prev2
Acc injury-prev2Hien Dinh
 

More from Hien Dinh (17)

Thiet bi co khi xuong can
Thiet bi co khi xuong canThiet bi co khi xuong can
Thiet bi co khi xuong can
 
Ly hop va hop so thuong
Ly hop va hop so thuongLy hop va hop so thuong
Ly hop va hop so thuong
 
Bai giang ma_sat
Bai giang ma_satBai giang ma_sat
Bai giang ma_sat
 
1 han va cat_trong_dong_tau
1 han va cat_trong_dong_tau1 han va cat_trong_dong_tau
1 han va cat_trong_dong_tau
 
Gt co so ky thuat cnc
Gt co so ky thuat cncGt co so ky thuat cnc
Gt co so ky thuat cnc
 
1 cong nghe-han-tig(1)
1 cong nghe-han-tig(1)1 cong nghe-han-tig(1)
1 cong nghe-han-tig(1)
 
1 cẩm nang gia công kim loại việt nam 2008
1 cẩm nang gia công kim loại việt nam 20081 cẩm nang gia công kim loại việt nam 2008
1 cẩm nang gia công kim loại việt nam 2008
 
Fanuc ot g code training manual
Fanuc ot g code training manualFanuc ot g code training manual
Fanuc ot g code training manual
 
Bai tap lap trinh cnc
Bai tap lap trinh cncBai tap lap trinh cnc
Bai tap lap trinh cnc
 
Sheet solutions 2009
Sheet solutions 2009Sheet solutions 2009
Sheet solutions 2009
 
Sheet metal design
Sheet metal designSheet metal design
Sheet metal design
 
Lythuyetbiendangdeo
LythuyetbiendangdeoLythuyetbiendangdeo
Lythuyetbiendangdeo
 
Accident investigation 3
Accident investigation 3Accident investigation 3
Accident investigation 3
 
Accident injury prevention
Accident injury preventionAccident injury prevention
Accident injury prevention
 
Accident reporting and investigation
Accident reporting and investigationAccident reporting and investigation
Accident reporting and investigation
 
An toan1
An toan1An toan1
An toan1
 
Acc injury-prev2
Acc injury-prev2Acc injury-prev2
Acc injury-prev2
 

Recently uploaded

Meas_Dylan_DMBS_PB1_2024-05XX_Revised.pdf
Meas_Dylan_DMBS_PB1_2024-05XX_Revised.pdfMeas_Dylan_DMBS_PB1_2024-05XX_Revised.pdf
Meas_Dylan_DMBS_PB1_2024-05XX_Revised.pdf
dylandmeas
 
Tata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s Dholera
Tata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s DholeraTata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s Dholera
Tata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s Dholera
Avirahi City Dholera
 
anas about venice for grade 6f about venice
anas about venice for grade 6f about veniceanas about venice for grade 6f about venice
anas about venice for grade 6f about venice
anasabutalha2013
 
Improving profitability for small business
Improving profitability for small businessImproving profitability for small business
Improving profitability for small business
Ben Wann
 
ENTREPRENEURSHIP TRAINING.ppt for graduating class (1).ppt
ENTREPRENEURSHIP TRAINING.ppt for graduating class (1).pptENTREPRENEURSHIP TRAINING.ppt for graduating class (1).ppt
ENTREPRENEURSHIP TRAINING.ppt for graduating class (1).ppt
zechu97
 
Putting the SPARK into Virtual Training.pptx
Putting the SPARK into Virtual Training.pptxPutting the SPARK into Virtual Training.pptx
Putting the SPARK into Virtual Training.pptx
Cynthia Clay
 
falcon-invoice-discounting-a-premier-platform-for-investors-in-india
falcon-invoice-discounting-a-premier-platform-for-investors-in-indiafalcon-invoice-discounting-a-premier-platform-for-investors-in-india
falcon-invoice-discounting-a-premier-platform-for-investors-in-india
Falcon Invoice Discounting
 
What are the main advantages of using HR recruiter services.pdf
What are the main advantages of using HR recruiter services.pdfWhat are the main advantages of using HR recruiter services.pdf
What are the main advantages of using HR recruiter services.pdf
HumanResourceDimensi1
 
VAT Registration Outlined In UAE: Benefits and Requirements
VAT Registration Outlined In UAE: Benefits and RequirementsVAT Registration Outlined In UAE: Benefits and Requirements
VAT Registration Outlined In UAE: Benefits and Requirements
uae taxgpt
 
amptalk_RecruitingDeck_english_2024.06.05
amptalk_RecruitingDeck_english_2024.06.05amptalk_RecruitingDeck_english_2024.06.05
amptalk_RecruitingDeck_english_2024.06.05
marketing317746
 
ModelingMarketingStrategiesMKS.CollumbiaUniversitypdf
ModelingMarketingStrategiesMKS.CollumbiaUniversitypdfModelingMarketingStrategiesMKS.CollumbiaUniversitypdf
ModelingMarketingStrategiesMKS.CollumbiaUniversitypdf
fisherameliaisabella
 
The Influence of Marketing Strategy and Market Competition on Business Perfor...
The Influence of Marketing Strategy and Market Competition on Business Perfor...The Influence of Marketing Strategy and Market Competition on Business Perfor...
The Influence of Marketing Strategy and Market Competition on Business Perfor...
Adam Smith
 
LA HUG - Video Testimonials with Chynna Morgan - June 2024
LA HUG - Video Testimonials with Chynna Morgan - June 2024LA HUG - Video Testimonials with Chynna Morgan - June 2024
LA HUG - Video Testimonials with Chynna Morgan - June 2024
Lital Barkan
 
CADAVER AS OUR FIRST TEACHER anatomt in your.pptx
CADAVER AS OUR FIRST TEACHER anatomt in your.pptxCADAVER AS OUR FIRST TEACHER anatomt in your.pptx
CADAVER AS OUR FIRST TEACHER anatomt in your.pptx
fakeloginn69
 
Cracking the Workplace Discipline Code Main.pptx
Cracking the Workplace Discipline Code Main.pptxCracking the Workplace Discipline Code Main.pptx
Cracking the Workplace Discipline Code Main.pptx
Workforce Group
 
Attending a job Interview for B1 and B2 Englsih learners
Attending a job Interview for B1 and B2 Englsih learnersAttending a job Interview for B1 and B2 Englsih learners
Attending a job Interview for B1 and B2 Englsih learners
Erika906060
 
20240425_ TJ Communications Credentials_compressed.pdf
20240425_ TJ Communications Credentials_compressed.pdf20240425_ TJ Communications Credentials_compressed.pdf
20240425_ TJ Communications Credentials_compressed.pdf
tjcomstrang
 
RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...
RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...
RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...
BBPMedia1
 
The effects of customers service quality and online reviews on customer loyal...
The effects of customers service quality and online reviews on customer loyal...The effects of customers service quality and online reviews on customer loyal...
The effects of customers service quality and online reviews on customer loyal...
balatucanapplelovely
 
Digital Transformation and IT Strategy Toolkit and Templates
Digital Transformation and IT Strategy Toolkit and TemplatesDigital Transformation and IT Strategy Toolkit and Templates
Digital Transformation and IT Strategy Toolkit and Templates
Aurelien Domont, MBA
 

Recently uploaded (20)

Meas_Dylan_DMBS_PB1_2024-05XX_Revised.pdf
Meas_Dylan_DMBS_PB1_2024-05XX_Revised.pdfMeas_Dylan_DMBS_PB1_2024-05XX_Revised.pdf
Meas_Dylan_DMBS_PB1_2024-05XX_Revised.pdf
 
Tata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s Dholera
Tata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s DholeraTata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s Dholera
Tata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s Dholera
 
anas about venice for grade 6f about venice
anas about venice for grade 6f about veniceanas about venice for grade 6f about venice
anas about venice for grade 6f about venice
 
Improving profitability for small business
Improving profitability for small businessImproving profitability for small business
Improving profitability for small business
 
ENTREPRENEURSHIP TRAINING.ppt for graduating class (1).ppt
ENTREPRENEURSHIP TRAINING.ppt for graduating class (1).pptENTREPRENEURSHIP TRAINING.ppt for graduating class (1).ppt
ENTREPRENEURSHIP TRAINING.ppt for graduating class (1).ppt
 
Putting the SPARK into Virtual Training.pptx
Putting the SPARK into Virtual Training.pptxPutting the SPARK into Virtual Training.pptx
Putting the SPARK into Virtual Training.pptx
 
falcon-invoice-discounting-a-premier-platform-for-investors-in-india
falcon-invoice-discounting-a-premier-platform-for-investors-in-indiafalcon-invoice-discounting-a-premier-platform-for-investors-in-india
falcon-invoice-discounting-a-premier-platform-for-investors-in-india
 
What are the main advantages of using HR recruiter services.pdf
What are the main advantages of using HR recruiter services.pdfWhat are the main advantages of using HR recruiter services.pdf
What are the main advantages of using HR recruiter services.pdf
 
VAT Registration Outlined In UAE: Benefits and Requirements
VAT Registration Outlined In UAE: Benefits and RequirementsVAT Registration Outlined In UAE: Benefits and Requirements
VAT Registration Outlined In UAE: Benefits and Requirements
 
amptalk_RecruitingDeck_english_2024.06.05
amptalk_RecruitingDeck_english_2024.06.05amptalk_RecruitingDeck_english_2024.06.05
amptalk_RecruitingDeck_english_2024.06.05
 
ModelingMarketingStrategiesMKS.CollumbiaUniversitypdf
ModelingMarketingStrategiesMKS.CollumbiaUniversitypdfModelingMarketingStrategiesMKS.CollumbiaUniversitypdf
ModelingMarketingStrategiesMKS.CollumbiaUniversitypdf
 
The Influence of Marketing Strategy and Market Competition on Business Perfor...
The Influence of Marketing Strategy and Market Competition on Business Perfor...The Influence of Marketing Strategy and Market Competition on Business Perfor...
The Influence of Marketing Strategy and Market Competition on Business Perfor...
 
LA HUG - Video Testimonials with Chynna Morgan - June 2024
LA HUG - Video Testimonials with Chynna Morgan - June 2024LA HUG - Video Testimonials with Chynna Morgan - June 2024
LA HUG - Video Testimonials with Chynna Morgan - June 2024
 
CADAVER AS OUR FIRST TEACHER anatomt in your.pptx
CADAVER AS OUR FIRST TEACHER anatomt in your.pptxCADAVER AS OUR FIRST TEACHER anatomt in your.pptx
CADAVER AS OUR FIRST TEACHER anatomt in your.pptx
 
Cracking the Workplace Discipline Code Main.pptx
Cracking the Workplace Discipline Code Main.pptxCracking the Workplace Discipline Code Main.pptx
Cracking the Workplace Discipline Code Main.pptx
 
Attending a job Interview for B1 and B2 Englsih learners
Attending a job Interview for B1 and B2 Englsih learnersAttending a job Interview for B1 and B2 Englsih learners
Attending a job Interview for B1 and B2 Englsih learners
 
20240425_ TJ Communications Credentials_compressed.pdf
20240425_ TJ Communications Credentials_compressed.pdf20240425_ TJ Communications Credentials_compressed.pdf
20240425_ TJ Communications Credentials_compressed.pdf
 
RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...
RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...
RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...
 
The effects of customers service quality and online reviews on customer loyal...
The effects of customers service quality and online reviews on customer loyal...The effects of customers service quality and online reviews on customer loyal...
The effects of customers service quality and online reviews on customer loyal...
 
Digital Transformation and IT Strategy Toolkit and Templates
Digital Transformation and IT Strategy Toolkit and TemplatesDigital Transformation and IT Strategy Toolkit and Templates
Digital Transformation and IT Strategy Toolkit and Templates
 

A great example_of_checking_foundations

  • 1. A great example of checking foundations / ground before setting up for a lift.
  • 2. • Incident: Friday Morning 26/09/08 – Castle Hill / Sydney • Equipment: 9 Day Old 250t Leibherr Crane (never used before) • Values: $4 mill price tag
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9. What went wrong…. • Insufficient risk analysis and planning. • Failure of back propping beneath the 200mm thick concrete deck. • Crane support outrigger punched through slab causing crane to lose balance and collapse across the site and onto adjoining property. • The Crane balanced in the air for approx 1 hour before entire rig & boom collapsed completely across site and rig falls through to the basement level. Amazingly no-one was seriously injured or killed.
  • 10. What went wrong…. • Insufficient risk analysis and planning. • Failure of back propping beneath the 200mm thick concrete deck. • Crane support outrigger punched through slab causing crane to lose balance and collapse across the site and onto adjoining property. • The Crane balanced in the air for approx 1 hour before entire rig & boom collapsed completely across site and rig falls through to the basement level. Amazingly no-one was seriously injured or killed.